Metal frames for constructing building boards



June .18, 19.35. A. RAFTER METAL FRAMS FOR ooNsTRUcTING BUILDING BOARDS Filed Deo. l2, 1953 2 Sheets-Shect l IM il I l.. f A L@ 4 ATTORNEY June 18, 1935. A, RAFTER METAL FRAMES FOR CONSTRUCTING BUILDING BOARDS Filed Deo. l2, 1935 2 Sheets-Sheet 2 ATTORN EY Patented `une 18, 19.35'

METAL f BUILDING.k Beginns Rafter Machinepompany,Belleville,,N1 J., ai 1 l-`partnership composed of "`John'0. Rafter, 'Ji'. y i

Albert Rafter and" Applicationfneceinbr 12, 1933,"serial No. 7.o1,959=

inventionrelates to boards made' `ing the modified form `of strengthening andinfrom'cementitious materials, andpmore particularly to improvements in channelledm'etalframes usedin such boards.;

Vr Thereis nowgbeingl generally nsedlin building;

construction a board which is made from gypsum or similar cementitious material, and such boards have been found very desirable for use in the construction of ceilings, walls, iloors and the like.

Inasmuch. as theI strength of gypsum is notvery great, it is necessary to reenforce such boards by l channelledmetal frames, which are provided with' means togzenable adjacent boards to'be inter-1l:

locked. .Heretofore, the interlocking means usedA 15' lin suchframeshavebeen unsatisfactoryin that` they add considerable material to. thel frame and decrease thestrength of the-same;` and the'V line o f interlocking between adjacent boards is greatly weakened so that when force' is applied to thatv Apointthere is danger oibreaking itheinterlock.

It is an object of thisinventiom to provide improvements in means for interlocking adjacent;l

frames without decreasing thestrength ofthe frame or causing a lin'e ofy low resistance atthe 'points of interlocking. 1 object oi thelinvention to pro-. y vide, novel shapes and interlocking meansfin chanf.

ened due to the cylindrical flanges It isv a further nelled frames for building boards, by lmeans `of titions material tothe f rarlile.`

of parts. hereinafter described and exhibited in the accompanying drawings, forming part hereof, and in which:

Fig. 1 is a perspective View of a channelled metal frame for a building board embodying my invention, f

Fig. 2 is 'a perspective view, a cornerof a frame shownin Fig. 1,

Fig. 3 isa sectional view'illustrating'the manner in which two adjacent frames are interlocked,

Fig. 4 is a cross-sectional view of two adjacent building boards, showing novel shapes for the yframes used therein, 'and vthe manner in which the frames are interlocked,

Fig. 5 is a perspective view, partly in section, of two adjacent frames of amodied shape, and having means for strengthening and interlocking the frame,

Fig. 6 is a perspective view, partly in section, of adjacent frame members of a modified form havvvese andother advantageous objects which will later appear, are accomplishedby the 'sim-; ple Iand, practical vconstruction and arrangement partly in section, of

terlocking means, and

lFig.- v7 shows a modification of framemembers` and novel means forjstrengthening and 'interf locking adjacent framemembers. f 5` Referring to the drawings, i Fig. 1r a frame f bottom' wall 9, and sidewalls. I0'. Struck outwardly from the bottom wall 9 `are a plurality of4 l10;v

spaced cylindrical anges I l; and struck inwardly from the-bottom wall 9' between the flanges II are similar cylindrical iianges` I2.' When; the gyp-f sum'yor similar cementitious `material poured,y

into the frame,"thernaterial maybe allowedfto'115 enter and ll-theeylindrical flanges Il, but theA flangesf I2 are"pl'ugged duringv such` operation so*l thatinon'e of the material-may enter'theangesg I I25. Now, whe itis desired to interlock two adja-j; ,f

centYframes-as-shown inFigfBythe cylindricaljg flanges I.I3whichproject outwardly from the'bot-;

tom wal19- of one-frame member are insertedinto j the inwardly directed vflanges Il', of thef adjacent framemember. kIn this manner two adjacent frames are posi- 251 tively interlockedand'atthe Sametime the kjoint ,l betweenthe adjacent frames is greatlystrength- II"a`nd I2, whicl1''obvionslyy displace metal Strom; the longitudinal 'centerline of'v the? position nearer Athe-iside 'walls'l IU 'to kvprovide "af be'amf structure" greatly' increased in lstrength asy is obvious to per'sonsfamiliar with strengtheningA y materials, itbeing "'nderstood that when 'inf use,

thefforcjesiarei applied against theside walls -10 `135 l ahdtransversely bottom walls 9.

Iny certain instances, it may be desirable to have two adjacent sides vof the rectangular frame provided with outwardly directed cylindrical 40 flanges' Il; and the other two adjacent sides of the rectangular frame provided with inwardly directed cylindrical flanges I2. Such av structure, of course, would necessitate the arranging of adto 'the-longitudinal kaxis of the f jacent frames in a definite manner at all times.

` In Fig. 4 is shown an adaptation of theinvention where it is desired that the metal frame members be entirely concealed. In Fig. 5 is shown a modied form of frame member which is made from a channel having a bottom wall I3 and side walls I4 which are provided with inwardly directed right angular flanges I5, each side wall I4 also having depressed portions I6 adjacent the junction of theV side walls with the bottom wall I3. When it isv 55 the depressed portions l frameshaving such structure,

" frames, a plate 'the pmt@ 2%11'5. 4flangesV 3-I which rest upon the depressed por.-

yvirtue oflthe anges L Strength."

.Referring ,to Fig.- 7 there is shown aV modified desired to join two adjacent frames of such a i structure, there is provided between the bottom walls I3 of the adjacent frame members, a strengthening plate I'I, which is bent to provide flanges I8 at right angles to the plate I'I and to give the strengthening plate a substantially I- shape incross section. The flanges lrest'upon I6 of theside walls of the channels, the anges I8 being substantially flush with the raised portions I4 of the side walls asl shown in Fig. 5. This structure also` provides an, unusually strong joint between adjacent trame members `so that in the event of the application of force along the line of juncture there will be no possibility of breaking the' distorting the frame member.

In Fig. 6 is shown another modied form of frame member having va bottom wall I 9 and side walls provided with raised portions 2q and de.- pressed portions 2|, the bottom walls- I9 also having struck out therefrom a plurality. of spaced cylindrical flanges 22. join adjacent framesl having such a structure,

there is provided between the bottom-walls I9 ak strengthening member which comprises a plate 23 havingv apertures therein through which the 23 being bent to also,-

flanges 22 pass, the plate f provide fianges 24 which rest l l A upon the depressed portions 2I of the side walls.

This structure by formof Yframe comprising a channel having bottom walls 25`and side wallsat right angles there-v tprov'ided with depressed'pornons 26 and raised portions 21, the bottcxnwally having struck inwardly'ther'efroma plurality of cylindrical flanges desired to join. two adjacentv there is insertedL of the adjaent 28,. When it is.,

between the bottom walls 28 Shaving Struck.

outwardly there,- frem e plurality adaptedtoofit in Vhe cylindrical flanges28fof the bottom' wall of one of the frame members, and also provided with right angled side wallsofnone of the frame members' 1 #111 ewanA from the' drawings., andr the description ,of the. several modified forms of frame members ydisclosedherein thatI haveprovided frame5 members ofsimple constructiqn, but of great-,strength which are admirably adapted for useoincpnnection with building boards made from gypsum or cementitious material; and it4 will alsoy be `seen. that Iv have disclosed. novel board or joint or- When it is desiredtoV 2,2 provides a joint of great y vof spacedl cylindrical flanges :HLV

'claim as new and desire to secure by Letters Patent, is:

1,. A frame for constructing building boards of cementitious material, comprising a metal channel having a bottom wall and side walls at right anglesthereto, said bottom Wall having a plurality of spaced hollow cylindrical flanges struck outwardly along the longitudinal center line thereof and a plurality of spaced hollow cylindrical iianges struck inwardly, said inwardly directed anges forming small cylinders having a diameter greater than the. diameter of the cylinders formed by the outwardly directed flanges.

2. In combination with a pair of adjacent frames for constructing building boards of cementitious material, each of said frames comprising a metal channel having a bottom wall and side walls at right angles thereto, said bottom walls having a plurality of spaced cylindrical anges struck youtwardly along the longitudinal center lines thereof, a device for connecting said adjacent frames, said device comprising a plate having' a plurality of spaced apertures receiving lthe spaced cylindrical flanges of one of said connecting said adjacent frames, said devicev comprising a, plate having a plurality of spaced aperturesreceiving the spaced cylindrical flanges of one of said frames and havingflanges engag ingfthe depressed-.portions of the side wallsof the other frame. 1 

